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- W4384078684 abstract "In this study, a fault tolerant attitude estimation system is proposed for a nanosatellite, combining the TRIAD algorithm, a vector-based attitude determination method, with an adaptive extended Kalman filter. As the first step of the estimation system, the TRIAD algorithm produces an initial coarse attitude estimation using three-axis magnetometer and sun sensor measurements. Then, this coarse estimation is filtered via an adaptive extended Kalman filter to obtain the final estimation. Besides filtering and providing more accurate estimations, the adaptive filter also makes the system fault tolerant by maintaining the estimation accuracy in cases where sensor faults exist and measurements become unreliable. This is made possible by tracking the filter's innovation history and re-adjusting the Kalman gain using appropriately calculated fading factors. In order to verify the performance of the proposed system, two different simulations are performed where the attitude sensor outputs are disturbed by additional measurement noise." @default.
- W4384078684 created "2023-07-13" @default.
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- W4384078684 date "2023-01-01" @default.
- W4384078684 modified "2023-09-23" @default.
- W4384078684 title "TRIAD aided adaptive Kalman filter for fault tolerant attitude estimation of a nanosatellite" @default.
- W4384078684 doi "https://doi.org/10.1504/ijsa.2023.132115" @default.
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